Aggron: Absol's evolution should be vicious, but cool-looking. Not an ugly mug.
Nyeem: I don't think that the legendaries should evolve. It would get rid of the whole legendary feel to them. That's partly the reason I don't like Manaphy. I know Phione doesn't evolve into it, but you breed to get it, and it makes Manaphy less lengendary, if you know what I mean.
Demonofpokemon: A crazy Sableye evolution would be awesome. ^_^